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CVE-2011-5279
CRLF injection vulnerability in the CGI implementation in Microsoft Internet Information Services (IIS) 4.x and 5.x on Windows NT and…
Medium5.0EPSS 19.6%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
CRLF injection vulnerability in the CGI implementation in Microsoft Internet Information Services (IIS) 4.x and 5.x on Windows NT and Windows 2000 allows remote attackers to modify arbitrary uppercase environment variables via a \n (newline) character in an HTTP header.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium5.0 | AV:N/AC:L/Au:N/C:N/I:P/A:N |
- EPSS (exploitation in 30 days)
- 19.6% · top 2.6% of all CVEs (2 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.0.
Weakness
- n/a
Affected products
n/a
- affected n/a
References (6)
- 20140419 Re: iis cgi 0day (opens in a new tab)mailing-listx_refsource_FULLDISCx_transferred
- 20140410 Re: iis cgi 0day (opens in a new tab)mailing-listx_refsource_FULLDISCx_transferred
- 20120401 FW: iis bug (opens in a new tab)mailing-listx_refsource_FULLDISCx_transferred
- 20140409 iis cgi 0day (opens in a new tab)mailing-listx_refsource_FULLDISCx_transferred
- http://hi.baidu.com/yuange1975/item/b2cc7141c22108e91e19bc2e (opens in a new tab)x_refsource_MISCx_transferred
- 20120402 Re: iis bug (opens in a new tab)mailing-listx_refsource_FULLDISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Record last updated .